The 1905 Salad (Columbia's Salad)

Name: The 1905 Salad (Columbia's Salad)
Prep time: 20 min
Total time: 20 min
Cuisine: American
Ingredients: 1/2 cup olive oil; 2 tbs lemon juice; 1-2 tbs white wine vinegar; 1-2 tbs Worcestershire sauce; 3 cloves garlic, (minced); 1 tsp dried oregano; salt and pepper (to taste); 1 head iceberg lettuce, (shredded ); 1/2 lb ham slices, (julienned); 1/3 lb Swiss cheese slices, (julienned); 10 oz cherry tomatoes, (halved); 5 oz green olives, (sliced); 1/2 red onion, (sliced thin); 5 oz croutons; 2 oz Parmesano Reggiano cheese, (grated)